| LMI方法的不确定离散时滞系统故障诊断 |
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| 引用本文： | 吕冬梅,于飞,颜秉勇,刘喜梅. LMI方法的不确定离散时滞系统故障诊断[J]. 哈尔滨工业大学学报, 2009, 0(12): 270-272 |
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| 作者姓名： | 吕冬梅 于飞 颜秉勇 刘喜梅 |
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| 作者单位： | 青岛科技大学,自动化及电子工程学院,山东,青岛,266042;上海交通大学,自动化系,上海,200240 |
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| 基金项目： | 国家自然科学基金资助项目(60574023);青岛市科技发展计划资助项目(05-1-jc-88) |
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| 摘 要： | 为了诊断出一类具有未知扰动和模型参数不确定的离散时滞系统中的故障,采用构建故障观测器的方法对系统的故障检测问题进行了研究.通过基于线性矩阵不等式(LMI)的方法,将故障诊断问题转化为系统鲁棒稳定性的分析问题,并给出了该问题的解的存在的LMI条件和求法.文中提出的方法既提高了故障对残差的敏感性,又有效的抑制了干扰,从而提高了故障检测的效果.
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| 关 键 词： | 不确定动态离散时滞系统 故障观测器 故障诊断 LMI |
Fault diagnosis of uncertain discrete-time systems with time-delay based on LMI approach |
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| LU Dong-mei,YU Fei,YAN Bing-yong,LIU Xi-mei. Fault diagnosis of uncertain discrete-time systems with time-delay based on LMI approach[J]. Journal of Harbin Institute of Technology, 2009, 0(12): 270-272 |
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| Authors: | LU Dong-mei YU Fei YAN Bing-yong LIU Xi-mei |
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| Affiliation: | 1(1.College of Automation and Electronic Engineering,Qingdao University of Science and Technology,Qingdao 266042,China;2.Dept.of Automation,Shanghai Jiao Tong University,Shanghai 200240,China) |
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| Abstract: | In order to diagnose the fault occurred in a class of uncertain disturbance and uncertain dynamic time-delay discrete systems,the state observer based method is used.Based on the LMI approach,the problem of system fault diagnosis can be substituted for that of analysis of the robust control,and the LMI conditions and solving methods are also given.Finally,a numerical example has been presented to illustrate the feasibility and effectiveness of the proposed approach. |
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| Keywords: | uncertain dynamic time-delay discrete system state observer fault diagnosis LMI |
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